Physics Crossword Puzzle

2. Began in late 19th century when quantum mechanics and theories of relativity start to occur.
4. Prescribe specific measurable tests necessary for a definition to apply.
6. The practical science done to advance our knowledge of life, the earth, and the universe.
11. The study of electricity and magnetism.
12. Models or describes an observed relationship among phenomena or properties under specified conditions.
14. Acceptable scientific standards.
16. Day-to-day research and is "puzzle-solving".
17. Present-day observations and experiments.
18. Obtained from measurements using calibrated instruments.
19. Provides workable or operational explanations of how the world functions.

1. A particular sequence of distinct steps in which scientist rarely works.
3. Creates hypotheses and develops theories and laws pertaining to events in the unobservable past.
5. The study of thermal energy's relationship with and its conversion into other forms of energy.
7. A request made from an journalist reporter to the scientists who are qualified to review the report before it is published.
8. The study of how and why motion occurs.
9. Inferences based upon certain assumptions.
10. Began in the 17th century and brought mechanics, electromagnetism, thermodynamics, and etc.
13. Made by seeing, hearing, smelling, feeling, or testing.
15. The measuring unit of each quantity.